Mechanical device for heating bakers&#39; ovens with crude petroleum.



No. 7527;238. I P-ATENTEDMAY 5,1909.

0. B. WARREN.

, V MECHANICAL DEVICE P03 HEATING BAKERS" OVENS WIT CRUDE PETEOLEUMJ.

Arumnon nun JAN. 3; 1902.

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Ni'ra STATES- Patented May 5, 1903.

:ATENT FFICE.

CHARLES E. WARREN, OF LOS ANGELES, CALIFORNIA.

SPECIFICATION forming part of Letters Patent No. 727,238, dated May 5, 1903. Application filed J'anuaryS, 1902. Serial 1T0. 88,810. (No model.)

To all whom it may concern:

Be it known that 1, CHARLES E. WARREN, a citizen of the United States, and a resident of Los Angeles, in the county of Los Angeles and State of California, have invented certain new and useful Improvements in Mechanical Devices for Heating Bakers Ovenswith Crude Petroleum, of which the following is a specification.

This invention relates to bakers and other ovens generally, but more particularly. to ovens of this class wherein the fuel is contained within the same space in whichthe baking is done. been customary heretofore to heat them by wood or coal placed within the baking-oven and when the proper degree of heat is at tained the coals and ashes are withdrawn from the oven and the oven swabbed, the baking being then proceeded with, or the fuel is put in one of the corners of the furnace or oven.

The object of my invention is to burn crude petroleumwithinthebaking-oven,therebyproducing a more uniform heat and not produce ashes or other deposits in the oven; and with this and minor objects in view my invention consists in the parts and combination of parts,

as will be hereinafter more fully described.

In the drawings, Figure 1 is aperspective view of the front of an oven with my invention embodied. Fig. 2 is a detail sectional view of a water-regulating valve.

A represents an ordinary bake-oven.

1 represents a steam-generating coil suspended within the oven, at one end thereof, the upper and lower legs of the said coil being embedded in and supported by the walls of the oven. 2 represents pipes connected to the upper and lower legs of the said coil for the purpose of producing circulation in the coil and to conveysteam to the steam-chamber 3, mounted in a suitable position upon the top of the oven.

4 is a pipe running froin the steam-chamber to a point above the bottom of the oven on the outside.

5 represents an oil-chamber from which ex tends a suitable injector-burnerG, there being a suitable valve 6 to control the how of oil to said burner.

46' is a steam-pipe mounted within the oilejector-burner.

In ovens of this class it has chamber 5 and suitably connected to the injector-burner and provided with a valve 45 to control the admission of steam into said in- One end of the steam-pipe 4. is connected to the steam-pipe 4. by means of a suitablejswivel-joint 8, while the rear end of the oil-chamber 5 is connected to an oilsupply pipe 7 by means of a swivel-joint 8,

similar to theswivel-joint 8 just referred to.

These'several swivel-joints 8 and'S are constructed of elbows and straight sections of pipe so arranged as to allow the swinging outward and upward of the oil-chamber 5, the steam-pipe 4 and the injector-burner 6, as indicated by the dotted lines do b b a c b 0, whereby the parts mentioned may be moved out of the way of the door of the oven.

10 represents a water-supply pipe running into a suitable T-joint 10", said T-joint being connected to the lower leg ofthe coil 1 by means of the section of pipe 10.

11 is a suitable valve-casing extending into the section 10 and provided at its inner end with a valve-seat 12. The valve-casing is for the purpose of.warming the Water by the steam' 'or hot water surrounding it in the pipe into which it leadsbefore being let into the coil.

13 is a'valve-stem provided with a suitable operating hand-wheel 14 at one end and a valve-plug 15 at-the other end, said valveplug being adapted to seat in the valve-seat 12, as shown in Fig. 2.

9 is a suitable gage-glass connected with the Water-coil for the purpose of showing the amount of water in said coil.

15 is a suitable steam-gage, and 16 is a safety-valve mounted upon the top of the steam-chamber 3.

The operation is as follows: The coil 1, be-

ing filled with water, is always hot from the heatof the oven, and the valve 6*is opened to admit, oil to the burner 6, said burner, by

reason of its position immediately under the The steam passing through the pipe 4 Within the oil-chamber serves to heat the oil within the oil-chamber. After the device is in operation the admission of water to the coil is controlled by means of the hand-Wheel 14 operating valve 15. The water is forced into the coil from a suitable source. The steampressure required to run the burner is only from fifteen to twenty-five or thirty pounds and is kept below the Water-pressure by the safety-valve or by moving the burner under the coil.

Having thus described my invention, What I claim as new therein, and desire to secure by Letters Patent, is-

A bakers even of the class described, pro- CHARLES E. VARREN.

In presence of- GEORGE ROUGHTON, G. A. VON BRANDIS. 

